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{
"schema_version": "1.7.0",
"id": "USN-6440-2",
"summary": "linux-azure vulnerabilities",
"details": "Seth Jenkins discovered that the Linux kernel did not properly perform\naddress randomization for a per-cpu memory management structure. A local\nattacker could use this to expose sensitive information (kernel memory) or\nin conjunction with another kernel vulnerability. (CVE-2023-0597)\n\nIt was discovered that the IPv6 implementation in the Linux kernel\ncontained a high rate of hash collisions in connection lookup table. A\nremote attacker could use this to cause a denial of service (excessive CPU\nconsumption). (CVE-2023-1206)\n\nYu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in\nthe Linux kernel contained a race condition, leading to a null pointer\ndereference vulnerability. A local attacker could use this to cause a\ndenial of service (system crash). (CVE-2023-31083)\n\nRoss Lagerwall discovered that the Xen netback backend driver in the Linux\nkernel did not properly handle certain unusual packets from a\nparavirtualized network frontend, leading to a buffer overflow. An attacker\nin a guest VM could use this to cause a denial of service (host system\ncrash) or possibly execute arbitrary code. (CVE-2023-34319)\n\nLin Ma discovered that the Netlink Transformation (XFRM) subsystem in the\nLinux kernel contained a null pointer dereference vulnerability in some\nsituations. A local privileged attacker could use this to cause a denial of\nservice (system crash). (CVE-2023-3772)\n\nKyle Zeng discovered that the networking stack implementation in the Linux\nkernel did not properly validate skb object size in certain conditions. An\nattacker could use this cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2023-42752)\n\nKyle Zeng discovered that the netfiler subsystem in the Linux kernel did\nnot properly calculate array offsets, leading to a out-of-bounds write\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-42753)\n\nKyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP)\nclassifier implementation in the Linux kernel contained an out-of-bounds\nread vulnerability. A local attacker could use this to cause a denial of\nservice (system crash). Please note that kernel packet classifier support\nfor RSVP has been removed to resolve this vulnerability. (CVE-2023-42755)\n\nBing-Jhong Billy Jheng discovered that the Unix domain socket\nimplementation in the Linux kernel contained a race condition in certain\nsituations, leading to a use-after-free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4622)\n\nBudimir Markovic discovered that the qdisc implementation in the Linux\nkernel did not properly validate inner classes, leading to a use-after-free\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-4623)\n\nAlex Birnberg discovered that the netfilter subsystem in the Linux kernel\ndid not properly validate register length, leading to an out-of- bounds\nwrite vulnerability. A local attacker could possibly use this to cause a\ndenial of service (system crash). (CVE-2023-4881)\n\nIt was discovered that the Quick Fair Queueing scheduler implementation in\nthe Linux kernel did not properly handle network packets in certain\nconditions, leading to a use after free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4921)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2023-0597",
"UBUNTU-CVE-2023-1206",
"UBUNTU-CVE-2023-3772",
"UBUNTU-CVE-2023-4622",
"UBUNTU-CVE-2023-4623",
"UBUNTU-CVE-2023-4881",
"UBUNTU-CVE-2023-4921",
"UBUNTU-CVE-2023-31083",
"UBUNTU-CVE-2023-34319",
"UBUNTU-CVE-2023-42752",
"UBUNTU-CVE-2023-42753",
"UBUNTU-CVE-2023-42755"
],
"related": [],
"published": "2023-10-20T12:33:28Z",
"modified": "2026-10-23T07:18:54Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "linux-azure",
"purl": "pkg:deb/ubuntu/linux-azure@4.15.0-1171.186~14.04.1?arch=source&distro=trusty/esm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.15.0-1171.186~14.04.1"
}
]
}
],
"versions": [
"4.15.0-1023.24~14.04.1",
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],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-azure-cloud-tools-4.15.0-1171",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-azure-headers-4.15.0-1171",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-azure-tools-4.15.0-1171",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-buildinfo-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-cloud-tools-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-headers-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-image-unsigned-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-modules-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-modules-extra-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
},
{
"binary_name": "linux-tools-4.15.0-1171-azure",
"binary_version": "4.15.0-1171.186~14.04.1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": [
{
"id": "CVE-2023-0597",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2023-1206",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-3772",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2023-4622",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-4623",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-4881",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-4921",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-31083",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2023-34319",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-42752",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-42753",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2023-42755",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6440-2"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-0597"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-1206"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-3772"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4622"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4623"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4881"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-4921"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-31083"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-34319"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-42752"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-42753"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-42755"
}
]
}
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